Vacuum cleaner



FIG. 1 is a front perspective view of a vacuum cleaner showing the claimed design.

FIG. 2 is a front elevational view of the vacuum cleaner.

FIG. 3 is a rear elevational view of the vacuum cleaner.

FIG. 4 is a right elevated side view of the vacuum cleaner.

FIG. 5 is a left elevational side view of the vacuum cleaner.

FIG. 6 is a bottom plan view of the vacuum cleaner; and,

FIG. 7 is a top plan view of the vacuum cleaner. 

The ornamental design for a vacuum cleaner, as shown and described. 